Roger A. Carolin - Sep 23, 2025 Form 4 Insider Report for AMKOR TECHNOLOGY, INC. (AMKR)

Role
Director
Signature
/s/ Mark N. Rogers, Attorney-in-Fact for Roger A. Carolin
Stock symbol
AMKR
Transactions as of
Sep 23, 2025
Transactions value $
$0
Form type
4
Date filed
9/25/2025, 04:43 PM
Previous filing
Jun 27, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Carolin Roger Anthony Director 7 GREAT VALLEY PARKWAY,, SUITE 190, MALVERN /s/ Mark N. Rogers, Attorney-in-Fact for Roger A. Carolin 2025-09-25 0001351909

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction AMKR Restricted Stock Units Award $0 +23.7 +0.27% $0.00 8.86K Sep 23, 2025 Common Stock 23.7 Direct F1
transaction AMKR Restricted Stock Units Award $0 +27.4 +0.28% $0.00 9.85K Sep 23, 2025 Common Stock 27.4 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on September 23, 2025 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.
F2 Represents DEUs accrued upon the payment of a dividend on September 23, 2025 with respect to RSUs of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.